137 lines
3.4 KiB
PHP
137 lines
3.4 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Robin Appelman
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* @copyright 2011 Robin Appelman icewind1991@gmail.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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require_once('MDB2/Driver/Function/Common.php');
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/**
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* MDB2 SQLite driver for the function modules
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Driver_Function_sqlite3 extends MDB2_Driver_Function_Common
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{
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// {{{ constructor
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/**
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* Constructor
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*/
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function __construct($db_index)
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{
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parent::__construct($db_index);
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// create all sorts of UDFs
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}
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// {{{ now()
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/**
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* Return string to call a variable with the current timestamp inside an SQL statement
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* There are three special variables for current date and time.
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*
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* @return string to call a variable with the current timestamp
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* @access public
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*/
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function now($type = 'timestamp')
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{
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switch ($type) {
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case 'time':
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return 'time(\'now\')';
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case 'date':
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return 'date(\'now\')';
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case 'timestamp':
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default:
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return 'datetime(\'now\')';
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}
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}
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// }}}
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// {{{ unixtimestamp()
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/**
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* return string to call a function to get the unix timestamp from a iso timestamp
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*
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* @param string $expression
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*
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* @return string to call a variable with the timestamp
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* @access public
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*/
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function unixtimestamp($expression)
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{
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return 'strftime("%s",'. $expression.', "utc")';
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}
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// }}}
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// {{{ substring()
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/**
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* return string to call a function to get a substring inside an SQL statement
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*
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* @return string to call a function to get a substring
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* @access public
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*/
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function substring($value, $position = 1, $length = null)
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{
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if (!is_null($length)) {
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return "substr($value,$position,$length)";
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}
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return "substr($value,$position,length($value))";
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}
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// }}}
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// {{{ random()
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/**
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* return string to call a function to get random value inside an SQL statement
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*
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* @return return string to generate float between 0 and 1
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* @access public
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*/
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function random()
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{
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return '((RANDOM()+2147483648)/4294967296)';
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}
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// }}}
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// {{{ replace()
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/**
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* return string to call a function to get a replacement inside an SQL statement.
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*
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* @return string to call a function to get a replace
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* @access public
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*/
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function replace($str, $from_str, $to_str)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$error =& $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'method not implemented', __FUNCTION__);
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return $error;
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}
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// }}}
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}
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